User Equipment Indication of Wake Up Signal Reception At Millimeter Wave Frequencies Using Digital Beamforming

ABSTRACT

Embodiments include systems and methods for managing millimeter wave (mmWave) communications with wireless devices capable of mmWave digital beamforming. Various embodiments may enable a wireless device to indicate to a base station that the wireless device is capable of wake-up signal (WUS) reception at mmWave frequencies using digital beamforming. Various aspects may include sending an indication to a base station that the wireless device is capable of using digital beamforming for WUS reception. Various aspects may include scheduling one or more WUS monitoring occasions for a single discontinuous reception (DRX) cycle and a single beam configuration for each of the one or more WUS monitoring occasions.

RELATED APPLICATIONS

This application claims the benefit of priority to U.S. ProvisionalApplication No. 63/078,882 entitled “UE Indication of WUS Reception AtmmWave Frequencies Using Digital Beamforming” filed Sep. 15, 2020, theentire contents of which are incorporated herein by reference for allpurposes.

BACKGROUND

Long Term Evolution (LTE), fifth generation (5G) new radio (NR), andother recently developed communication technologies allow wirelessdevices to communicate information at data rates (e.g., in terms ofGigabits per second, etc.) that are orders of magnitude greater thanwhat was available just a few years ago. New technologies enablingincreased data rates include the use of higher frequency bands, such asmillimeter wave (mmWave) frequency bands, and using beam formingantennas. Millimeter wave frequency bands are susceptible to rapidchannel variations and suffer from free-space pathloss and atmosphericabsorption. To address these challenges, NR base stations and wirelessdevices may use highly directional antennas (i.e., beam formingantennas) to achieve sufficient link budget with wireless devices inwide area networks. Such highly directional antennas require precisealignment of the transmitter and the receiver beams, for example, usingbeam management operations. However, beam management operations mayincrease the latency of establishing a communication link, and mayaffect control layer procedures, such as initial access, handover andbeam tracking.

SUMMARY

Various aspects include systems and methods for managing millimeter wave(mmWave) communications. Various aspects may enable a wireless device toindicate to a base station that the wireless device is capable ofwake-up signal (WUS) reception at mmWave frequencies using digitalbeamforming. Various aspects include methods that may be performed by aprocessor of a wireless device or a processor of a base station. Variousaspects may include sending an indication to the base station that thewireless device is capable of using digital beamforming for WUSreception, receiving a WUS configuration message from the base station,the WUS configuration message indicating a WUS monitoring occasion for asingle discontinuous reception (DRX) cycle and a single beamconfiguration for the WUS monitoring occasion, and using digitalbeamforming to receive a WUS message from the base station during theWUS monitoring occasion in response to receiving the WUS configurationmessage from the base station.

Some aspects may further include receiving a physical downlink controlchannel (PDCCH) message during the single DRX cycle in response toreceiving the WUS message from the base station during the WUSmonitoring occasion. In some aspects, receiving the PDCCH message duringthe single DRX cycle may include receiving the PDCCH message during thesingle DRX cycle on a beam having a different beam configuration thanthe single beam configuration for the WUS monitoring occasion inresponse to receiving the WUS message from the base station during theWUS monitoring occasion. In some aspects, the different beamconfiguration may include a different transmission configurationindicator (TCI) state. In some aspects, receiving the PDCCH messageduring the single DRX cycle may include receiving the PDCCH messageduring the single DRX cycle on a beam having a same beam configurationas the single beam configuration for the WUS monitoring occasion. Insome aspects, receiving the PDCCH message during the single DRX cyclemay include using digital beamforming to receive the PDCCH messageduring the single DRX cycle. In some aspects, the WUS message and thePDCCH message are different format downlink control information (DCI)messages.

In some aspects, sending the indication to the base station that thewireless device is capable of digital beamforming for WUS reception mayinclude sending the indication in one of an uplink control information(UCI) message, a medium access control (MAC) control element(CE)(MAC-CE) message, or a radio resource control (RRC) message.

In some aspects, sending the indication to the base station that thewireless device is capable of digital beamforming for WUS reception mayinclude sending an indication to the base station that the wirelessdevice is capable of mmWave digital beamforming for WUS reception in oneof Frequency Range (FR) 2 or FR4.

Various aspects may include receiving an indication from a wirelessdevice that the wireless device is capable of using digital beamformingfor WUS reception, transmitting a WUS configuration message for a singleDRX cycle of the wireless device in response to receiving the indicationfrom the wireless device that the wireless device is capable of usingdigital beamforming for WUS reception, the WUS configuration messageindicating a WUS monitoring occasion for the single DRX cycle and asingle beam configuration for the WUS monitoring occasion. Some aspectsmay further include transmitting a WUS message to the wireless deviceusing a beam having the single beam configuration during the WUSmonitoring occasion. Some aspects may further include transmitting aPDCCH message during the single DRX cycle in response to transmittingthe WUS message. In some aspects, transmitting the PDCCH message duringthe single DRX cycle may include transmitting the PDCCH message duringthe single DRX cycle using a beam having a same beam configuration asthe single beam configuration. In some aspects, transmitting the PDCCHmessage during the single DRX cycle may include transmitting the PDCCHmessage during the single DRX cycle using a beam having a different beamconfiguration than the single beam configuration. In some aspects, thedifferent beam configuration may include a different TCI state. In someaspects, the WUS message and the PDCCH message are different format DCImessages.

In some aspects, the indication from the wireless device that thewireless device is capable of digital beamforming for WUS reception maybe received in one of a UCI message, a MAC-CE message, or a RRC message.

In some aspects, receiving the indication from the wireless device thatthe wireless device is capable of digital beamforming for WUS receptionmay include receiving an indication from the wireless device that thewireless device is capable of mmWave digital beamforming for WUSreception in one of FR2 or FR4. In some aspects, the beam having thesingle beam configuration may include one of a mmWave beam in FR2 or ammWave beam in FR4.

Further aspects may include a wireless device having a processorconfigured to perform one or more operations of any of the methodssummarized above. Further aspects may include processing devices for usein a wireless device configured with processor-executable instructionsto perform operations of any of the methods summarized above. Furtheraspects may include a non-transitory processor-readable storage mediumhaving stored thereon processor-executable instructions configured tocause a processor of a wireless device to perform operations of any ofthe methods summarized above. Further aspects include a wireless devicehaving means for performing functions of any of the methods summarizedabove. Further aspects include a system on chip for use in a wirelessdevice and that includes a processor configured to perform one or moreoperations of any of the methods summarized above. Further aspects mayinclude a base station having a processor configured to perform one ormore operations of any of the methods summarized above. Further aspectsmay include processing devices for use in a base station configured withprocessor-executable instructions to perform operations of any of themethods summarized above. Further aspects may include a non-transitoryprocessor-readable storage medium having stored thereonprocessor-executable instructions configured to cause a processor of abase station to perform operations of any of the methods summarizedabove. Further aspects include a base station having means forperforming functions of any of the methods summarized above. Furtheraspects include a system on chip for use in a base station and thatincludes a processor configured to perform one or more operations of anyof the methods summarized above.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a system block diagram illustrating an example communicationssystem suitable for implementing any of the various embodiments.

FIG. 2 is a component block diagram illustrating an example computingsystem and wireless modem suitable for implementing any of the variousembodiments.

FIG. 3 is a component block diagram illustrating a software architectureincluding a radio protocol stack for the user and control planes inwireless communications suitable for implementing any of the variousembodiments.

FIG. 4A is a component block diagram illustrating a mmWave receiversuitable for use with various embodiments.

FIG. 4B is a component block diagram illustrating a mmWave transmittersuitable for use with various embodiments.

FIG. 5A is a process flow diagram illustrating a method for managingcommunications with a base station in accordance with variousembodiments.

FIG. 5B is a process flow diagram illustrating a method for managingcommunications with a wireless device in accordance with variousembodiments.

FIG. 5C is time diagram illustrating a wake-up signal (WUS) monitoringoccasion for a discontinuous reception (DRX) cycle according to variousembodiments.

FIG. 5D is time diagram illustrating multiple WUS monitoring occasionsfor a DRX cycle according to various embodiments.

FIG. 6 is a component block diagram of a network computing devicesuitable for use with various embodiments.

FIG. 7 is a component block diagram of a wireless communication devicesuitable for use with various embodiments.

DETAILED DESCRIPTION

Various embodiments will be described in detail with reference to theaccompanying drawings. Wherever possible, the same reference numberswill be used throughout the drawings to refer to the same or like parts.References made to particular examples and implementations are forillustrative purposes, and are not intended to limit the scope of theclaims.

Various embodiments include systems and methods for managing millimeterwave (mmWave) communications. Various embodiments may enable a wirelessdevice to indicate to a base station that the wireless device is capableof wake-up signal (WUS) reception at mmWave frequencies using digitalbeamforming. Various embodiments may include a base station configuringone or more WUS monitoring occasions for a single discontinuousreception (DRX) cycle such that each of the one or more WUS monitoringoccasions has a single beam configuration. A single beam configurationmay be a beam configuration having a single transmission configurationindicator (TCI) state. A single WUS monitoring occasion with a singlebeam configuration may be sufficient for successful WUS reception when awireless device is using digital beamforming making WUS reception morerobust in various embodiments as a single beam may be used for a WUS incomparison to current WUS processes in which beam sweeping is required.As a single WUS monitoring occasion with a single beam configuration maybe sufficient for successful WUS reception when a wireless device isusing digital beamforming, in some embodiments a base station maytransmit a WUS on a single beam for WUS, either once per DRX cycle ormultiple times per DRX cycle without having to form different beams asis required in current networks.

The transmission of a WUS on a single beam when a wireless device iscapable of WUS reception at mmWave frequencies using digital beamformingmay increase the likelihood of WUS reception by the wireless device incomparison to current WUS operations because mismatching in beamsweeping operations between the wireless device and base station may notoccur. Additionally, the configuration of a single WUS monitoringoccasion with a single beam configuration according to variousembodiments may enable a TCI state of the beam for WUS transmission tobe different than the TCI state used for a beam during the on-durationor active time of a DRX cycle.

The term “wireless device” is used herein to refer to any one or all ofwireless router devices, wireless appliances, cellular telephones,smartphones, portable computing devices, personal or mobile multi-mediaplayers, laptop computers, tablet computers, smartbooks, ultrabooks,palmtop computers, wireless electronic mail receivers, multimediaInternet-enabled cellular telephones, medical devices and equipment,biometric sensors/devices, wearable devices including smart watches,smart clothing, smart glasses, smart wrist bands, smart jewelry (forexample, smart rings and smart bracelets), entertainment devices (forexample, wireless gaming controllers, music and video players, satelliteradios, etc.), wireless-network enabled Internet of Things (IoT) devicesincluding smart meters/sensors, industrial manufacturing equipment,large and small machinery and appliances for home or enterprise use,wireless communication elements within autonomous and semiautonomousvehicles, wireless devices affixed to or incorporated into variousmobile platforms, global positioning system devices, and similarelectronic devices that include a memory, wireless communicationcomponents and a programmable processor.

The term“system on chip” (SOC) is used herein to refer to a singleintegrated circuit (IC) chip that contains multiple resources orprocessors integrated on a single substrate. A single SOC may containcircuitry for digital, analog, mixed-signal, and radio-frequencyfunctions. A single SOC also may include any number of general purposeor specialized processors (digital signal processors, modem processors,video processors, etc.), memory blocks (such as ROM, RAM, Flash, etc.),and resources (such as timers, voltage regulators, oscillators, etc.).SOCs also may include software for controlling the integrated resourcesand processors, as well as for controlling peripheral devices.

The term“system in a package” (SIP) may be used herein to refer to asingle module or package that contains multiple resources, computationalunits, cores or processors on two or more IC chips, substrates, or SOCs.For example, a SIP may include a single substrate on which multiple ICchips or semiconductor dies are stacked in a vertical configuration.Similarly, the SIP may include one or more multi-chip modules (MCMs) onwhich multiple ICs or semiconductor dies are packaged into a unifyingsubstrate. A SIP also may include multiple independent SOCs coupledtogether via high speed communication circuitry and packaged in closeproximity, such as on a single motherboard or in a single wirelessdevice. The proximity of the SOCs facilitates high speed communicationsand the sharing of memory and resources.

As used herein, the terms “network,” “system,” “wireless network,”“cellular network,” and “wireless communication network” mayinterchangeably refer to a portion or all of a wireless network of acarrier associated with a wireless device and/or subscription on awireless device. The techniques described herein may be used for variouswireless communication networks, such as Code Division Multiple Access(CDMA), time division multiple access (TDMA), FDMA, orthogonal FDMA(OFDMA), single carrier FDMA (SC-FDMA) and other networks. In general,any number of wireless networks may be deployed in a given geographicarea. Each wireless network may support at least one radio accesstechnology, which may operate on one or more frequency or range offrequencies. For example, a CDMA network may implement UniversalTerrestrial Radio Access (UTRA) (including Wideband Code DivisionMultiple Access (WCDMA) standards), CDMA2000 (including IS-2000, IS-95and/or IS-856 standards), etc. In another example, a TDMA network mayimplement GSM Enhanced Data rates for GSM Evolution (EDGE). In anotherexample, an OFDMA network may implement Evolved UTRA (E-UTRA) (includingLTE standards), IEEE 802.11 (WiFi), IEEE 802.16 (WiMAX), IEEE 802.20,Flash-OFDM®, etc. Reference may be made to wireless networks that useLTE standards, and therefore the terms “Evolved Universal TerrestrialRadio Access,” “E-UTRAN” and “eNodeB” may also be used interchangeablyherein to refer to a wireless network. However, such references areprovided merely as examples, and are not intended to exclude wirelessnetworks that use other communication standards. For example, whilevarious Third Generation (3G) systems, Fourth Generation (4G) systems,and Fifth Generation (5G) systems are discussed herein, those systemsare referenced merely as examples and future generation systems (e.g.,sixth generation (6G) or higher systems) may be substituted in thevarious examples.

As used herein, the term “RF chain” refers to the components in acommunication device that send, receive, and decode radio frequencysignals. An RF chain typically includes a number of components coupledtogether that transmit RF signals that are referred to as a “transmitchain,” and a number of components coupled together that receive andprocess RF signals that are referred to as a “receive chain.”

Fifth Generation (5G) New Radio (NR) systems can provide high data ratecommunication services to wireless devices. However, the higherfrequency bands, such as millimeter wave (mmWave) frequency bands, aresusceptible to rapid channel variations and suffer from free-spacepathloss and atmospheric absorption. As used herein, mmWave frequencybands may include the mmWave spectrum bands assigned in 5G/NR operatingfrequency range (FR) 2, such as a 24.25-27.5 GHz mmWave spectrum band(e.g., band n258), a 26.5-29.5 GHz mmWave spectrum band (e.g., bandn257), a 27.5-28.35 GHz mmWave spectrum band (e.g., band n261), a 37-40GHz mmWave spectrum band (e.g., band n260), a 39.5-43.5 GHz mmWavespectrum band (e.g., band n259), etc. To address these limitations inmmWave communications, NR base stations and wireless devices may usehighly directional antennas to achieve sufficient link budgets in widearea networks. Such highly directional antennas require precisealignment of the transmitter and the receiver beams, for example, usingbeam management operations. However, beam management operations mayincrease latency due to the time required to establish communicationlinks, and may affect control layer procedures, such as initial access,handover and beam tracking.

Millimeter wave receivers employ analog or hybrid beamforming circuityand processing techniques. Analog or hybrid beamforming is performed inradio frequency (RF) or at an intermediate frequency (IF) through a bankof phase shifters (PS s). The receiver may include one PS per antennaelement. This architecture reduces the power consumption by using onlyone (e.g., high-resolution) analog to digital converter (ADC) per RFchain at the receiver (Rx). While analog and hybrid beamforming arepower efficient, they are only capable of receiving in one or a fewdirections at a given time, precluding multiplexed receptionmultiplexing capabilities.

Millimeter wave receivers also may be configured to employ digitalbeamforming techniques. Digital beamforming may be performed inbaseband. Each antenna element within an antenna panel may be coupled toan associated ADC in the Rx, with preferential reception processing,which enhances the reception capability in a particular direction(referred to as a reception beam), performed within a digital processorrather than analog circuitry as used in analog and hybrid beamformingtechniques. This enables the Rx to simultaneously tune reception beamsin any direction supported by the antenna panel, in contrast to analogand hybrid beamforming techniques that are limited to a few predefinedreception beams that are a function of the analog processing of RFsignals.

Digital reception beamforming has not been deployed in wireless devicesto date due to the high power consumption of the ADCs that are coupledto each antenna element. Wireless devices are battery powered, and thusare power constrained to provide sufficient service on a given batterycharge. Powering a conventional ADC for each antenna element would limitbattery life or require the use of large batteries. However, recentresearch in digital beamforming technologies offers the promise thatdigital beamforming may be possible in 5G NR-capable wireless devices byusing lower resolution ADCs that draw less power. For example, insteadof using ADCs with 8-bit resolution (i.e., the ability to resolve RFreceived power into 256 levels), research is indicating that ADCs with3-bit resolution (i.e., the ability to resolve RF received power into 8levels) 4-bit resolution (i.e., the ability to resolve RF received powerinto 16 levels) in digital beamforming applications achieve acceptableantenna gain with acceptable power demand. Thus, there is the potentialthat digital beamforming capabilities may be deployed in 5G NR-capablewireless devices in the near future.

Digital beamforming techniques may not replace analog and hybridbeamforming techniques that are deployed today and work well, butinstead may be implemented as an alternative antenna processing optionthat may be activated when analog and hybrid beamforming techniquessuffer beam failure. This is because the higher gain possible throughdigital beamforming may be sufficient to maintain a link withoutperforming a beam handover procedure when an analog reception beamexhibits unacceptable link quality. Digital beamforming may also provideother benefits that may be useful or preferable over analog and hybridbeamforming techniques in certain conditions, link quality demands, orapplications.

To enable the use of digital beamforming techniques when deployed inwireless devices, and when activated or available, new signaling will berequired between wireless devices and network nodes. Various embodimentsmay enable a wireless device to indicate to a base station that thewireless device is capable of WUS reception at mmWave frequencies usingdigital beamforming.

FIG. 1 shows a system block diagram illustrating an examplecommunications system. The communications system 100 may be a 5G NewRadio (NR) network, or any other suitable network such as a Long TermEvolution (LTE) network. While FIG. 1 illustrates a 5G network, latergeneration networks may include the same or similar elements. Therefore,the reference to a 5G network and 5G network elements in the followingdescriptions is for illustrative purposes and is not intended to belimiting.

The communications system 100 may include a heterogeneous networkarchitecture that includes a core network 140 and a variety of wirelessdevices (illustrated as wireless devices 120 a-120 e in FIG. 1). Thecommunications system 100 also may include a number of base stations(illustrated as the BS 110 a, the BS 110 b, the BS 110 c, and the BS 110d) and other network entities. A base station is an entity thatcommunicates with wireless devices, and also may be referred to as aNode B, an LTE Evolved nodeB (eNodeB or eNB), an access point (AP), aRadio head, a transmit receive point (TRP), a New Radio base station (NRBS), a 5G NodeB (NB), a Next Generation NodeB (gNodeB or gNB), or thelike. Each base station may provide communication coverage for aparticular geographic area. In 3GPP, the term “cell” can refer to acoverage area of a base station, a base station subsystem serving thiscoverage area, or a combination thereof, depending on the context inwhich the term is used. The core network 140 may be any type corenetwork, such as an LTE core network (e.g., an EPC network), 5G corenetwork, etc.

A base station 110 a-110 d may provide communication coverage for amacro cell, a pico cell, a femto cell, another type of cell, or acombination thereof. A macro cell may cover a relatively largegeographic area (for example, several kilometers in radius) and mayallow unrestricted access by wireless devices with service subscription.A pico cell may cover a relatively small geographic area and may allowunrestricted access by wireless devices with service subscription. Afemto cell may cover a relatively small geographic area (for example, ahome) and may allow restricted access by wireless devices havingassociation with the femto cell (for example, wireless devices in aclosed subscriber group (CSG)). A base station for a macro cell may bereferred to as a macro BS. A base station for a pico cell may bereferred to as a pico BS. A base station for a femto cell may bereferred to as a femto BS or a home BS. In the example illustrated inFIG. 1, a base station 110 a may be a macro BS for a macro cell 102 a, abase station 110 b may be a pico BS for a pico cell 102 b, and a basestation 110 c may be a femto BS for a femto cell 102 c. A base station110 a-110 d may support one or multiple (for example, three) cells. Theterms “eNB”, “base station”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5GNB”, and “cell” may be used interchangeably herein.

In some examples, a cell may not be stationary, and the geographic areaof the cell may move according to the location of a mobile base station.In some examples, the base stations 110 a-110 d may be interconnected toone another as well as to one or more other base stations or networknodes (not illustrated) in the communications system 100 through varioustypes of backhaul interfaces, such as a direct physical connection, avirtual network, or a combination thereof using any suitable transportnetwork.

The base station 110 a-110 d may communicate with the core network 140over a wired or wireless communication link 126. The wireless device 120a-120 e may communicate with the base station 110 a-110 d over awireless communication link 122.

The wired communication link 126 may use a variety of wired networks(such as Ethernet, TV cable, telephony, fiber optic and other forms ofphysical network connections) that may use one or more wiredcommunication protocols, such as Ethernet, Point-To-Point protocol,High-Level Data Link Control (HDLC), Advanced Data Communication ControlProtocol (ADCCP), and Transmission Control Protocol/Internet Protocol(TCP/IP).

The communications system 100 also may include relay stations (such asrelay BS 110 d). A relay station is an entity that can receive atransmission of data from an upstream station (for example, a basestation or a wireless device) and send a transmission of the data to adownstream station (for example, a wireless device or a base station). Arelay station also may be a wireless device that can relay transmissionsfor other wireless devices. In the example illustrated in FIG. 1, arelay station 110 d may communicate with macro the base station 110 aand the wireless device 120 d in order to facilitate communicationbetween the base station 110 a and the wireless device 120 d. A relaystation also may be referred to as a relay base station, a relay basestation, a relay, etc.

The communications system 100 may be a heterogeneous network thatincludes base stations of different types, for example, macro basestations, pico base stations, femto base stations, relay base stations,etc. These different types of base stations may have different transmitpower levels, different coverage areas, and different impacts oninterference in communications system 100. For example, macro basestations may have a high transmit power level (for example, 5 to 40Watts) whereas pico base stations, femto base stations, and relay basestations may have lower transmit power levels (for example, 0.1 to 2Watts).

A network controller 130 may couple to a set of base stations and mayprovide coordination and control for these base stations. The networkcontroller 130 may communicate with the base stations via a backhaul.The base stations also may communicate with one another, for example,directly or indirectly via a wireless or wireline backhaul.

The wireless devices 120 a, 120 b, 120 c may be dispersed throughoutcommunications system 100, and each wireless device may be stationary ormobile. A wireless device also may be referred to as an access terminal,a terminal, a mobile station, a subscriber unit, a station, userequipment (UE), etc.

A macro base station 110 a may communicate with the communicationnetwork 140 over a wired or wireless communication link 126. Thewireless devices 120 a, 120 b, 120 c may communicate with a base station110 a-110 d over a wireless communication link 122.

The wireless communication links 122 and 124 may include a plurality ofcarrier signals, frequencies, or frequency bands, each of which mayinclude a plurality of logical channels. The wireless communicationlinks 122 and 124 may utilize one or more radio access technologies(RATs). Examples of RATs that may be used in a wireless communicationlink include 3GPP LTE, 3G, 4G, 5G (such as NR), GSM, Code DivisionMultiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA),Worldwide Interoperability for Microwave Access (WiMAX), Time DivisionMultiple Access (TDMA), and other mobile telephony communicationtechnologies cellular RATs. Further examples of RATs that may be used inone or more of the various wireless communication links within thecommunication system 100 include medium range protocols such as Wi-Fi,LTE-U, LTE-Direct, LAA, MuLTEfire, and relatively short range RATs suchas ZigBee, Bluetooth, and Bluetooth Low Energy (LE).

Certain wireless networks (e.g., LTE) utilize orthogonal frequencydivision multiplexing (OFDM) on the downlink and single-carrierfrequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDMpartition the system bandwidth into multiple (K) orthogonal subcarriers,which are also commonly referred to as tones, bins, etc. Each subcarriermay be modulated with data. In general, modulation symbols are sent inthe frequency domain with OFDM and in the time domain with SC-FDM. Thespacing between adjacent subcarriers may be fixed, and the total numberof subcarriers (K) may be dependent on the system bandwidth. Forexample, the spacing of the subcarriers may be 15 kHz and the minimumresource allocation (called a “resource block”) may be 12 subcarriers(or 180 kHz). Consequently, the nominal Fast File Transfer (FFT) sizemay be equal to 128, 256, 512, 1024 or 2048 for system bandwidth of1.25, 2.5, 5, 10 or 20 megahertz (MHz), respectively. The systembandwidth also may be partitioned into subbands. For example, a subbandmay cover 1.08 MHz (i.e., 6 resource blocks), and there may be 1, 2, 4,8 or 16 subbands for system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz,respectively.

While descriptions of some implementations may use terminology andexamples associated with LTE technologies, some implementations may beapplicable to other wireless communications systems, such as a new radio(NR) or 5G network. NR may utilize OFDM with a cyclic prefix (CP) on theuplink (UL) and downlink (DL) and include support for half-duplexoperation using time division duplex (TDD). A single component carrierbandwidth of 100 MHz may be supported. NR resource blocks may span 12sub-carriers with a sub-carrier bandwidth of 75 kHz over a 0.1millisecond (ms) duration. Each radio frame may consist of 50 subframeswith a length of 10 ms. Consequently, each subframe may have a length of0.2 ms. Each subframe may indicate a link direction (i.e., DL or UL) fordata transmission and the link direction for each subframe may bedynamically switched. Each subframe may include DL/UL data as well asDL/UL control data. Beamforming may be supported and beam direction maybe dynamically configured. Multiple Input Multiple Output (MIMO)transmissions with precoding also may be supported. MIMO configurationsin the DL may support up to eight transmit antennas with multi-layer DLtransmissions up to eight streams and up to two streams per wirelessdevice. Multi-layer transmissions with up to 2 streams per wirelessdevice may be supported.

Aggregation of multiple cells may be supported with up to eight servingcells. Alternatively, NR may support a different air interface, otherthan an OFDM-based air interface.

Some wireless devices may be considered machine-type communication (MTC)or evolved or enhanced machine-type communication (eMTC) wirelessdevices. MTC and eMTC wireless devices include, for example, robots,drones, remote devices, sensors, meters, monitors, location tags, etc.,that may communicate with a base station, another device (for example,remote device), or some other entity. A wireless computing platform mayprovide, for example, connectivity for or to a network (for example, awide area network such as Internet or a cellular network) via a wired orwireless communication link. Some wireless devices may be consideredInternet-of-Things (IoT) devices or may be implemented as NB-IoT(narrowband internet of things) devices. The wireless device 120 a-120 emay be included inside a housing that houses components of the wirelessdevice 120 a-120 e, such as processor components, memory components,similar components, or a combination thereof.

In general, any number of communications systems and any number ofwireless networks may be deployed in a given geographic area. Eachcommunications system and wireless network may support a particularradio access technology (RAT) and may operate on one or morefrequencies. A RAT also may be referred to as a radio technology, an airinterface, etc. A frequency also may be referred to as a carrier, afrequency channel, etc. Each frequency may support a single RAT in agiven geographic area in order to avoid interference betweencommunications systems of different RATs. In some cases, 4G/LTE and/or5G/NR RAT networks may be deployed. For example, a 5G non-standalone(NSA) network may utilize both 4G/LTE RAT in the 4G/LTE RAN side of the5G NSA network and 5G/NR RAT in the 5G/NR RAN side of the 5G NSAnetwork. The 4G/LTE RAN and the 5G/NR RAN may both connect to oneanother and a 4G/LTE core network (e.g., an evolved packet core (EPC)network) in a 5G NSA network. Other example network configurations mayinclude a 5G standalone (SA) network in which a 5G/NR RAN connects to a5G core network.

In some implementations, two or more wireless devices (for example,illustrated as the wireless device 120 a and the wireless device 120 e)may communicate directly using one or more sidelink channels (forexample, without using a base station 110 a-d as an intermediary tocommunicate with one another). For example, the wireless devices 120 a-emay communicate using peer-to-peer (P2P) communications,device-to-device (D2D) communications, a vehicle-to-everything (V2X)protocol (which may include a vehicle-to-vehicle (V2V) protocol, avehicle-to-infrastructure (V2I) protocol, or similar protocol), a meshnetwork, or similar networks, or combinations thereof In this case, thewireless device 120 a-120 e may perform scheduling operations, resourceselection operations, as well as other operations described elsewhereherein as being performed by the base station 110 a-110 d.

FIG. 2 is a component block diagram illustrating an example computingand wireless modem system 200 suitable for implementing any of thevarious embodiments. Various embodiments may be implemented on a numberof single processor and multiprocessor computer systems, including asystem-on-chip (SOC) or system in a package (SIP).

With reference to FIGS. 1 and 2, the illustrated example computingsystem 200 (which may be a SIP in some embodiments) includes a two SOCs202, 204 coupled to a clock 206, a voltage regulator 208, and a wirelesstransceiver 266 configured to send and receive wireless communicationsvia an antenna (not shown) to/from wireless devices, such as a basestation 110a. In some implementations, the first SOC 202 may operate ascentral processing unit (CPU) of the wireless device that carries outthe instructions of software application programs by performing thearithmetic, logical, control and input/output (I/O) operations specifiedby the instructions. In some implementations, the second SOC 204 mayoperate as a specialized processing unit. For example, the second SOC204 may operate as a specialized 5G processing unit responsible formanaging high volume, high speed (such as 5 Gbps, etc.), or very highfrequency short wave length (such as 28 GHz mmWave spectrum, etc.)communications.

The first SOC 202 may include a digital signal processor (DSP) 210, amodem processor 212, a graphics processor 214, an application processor216, one or more coprocessors 218 (such as vector co-processor)connected to one or more of the processors, memory 220, custom circuity222, system components and resources 224, an interconnection/bus module226, one or more temperature sensors 230, a thermal management unit 232,and a thermal power envelope (TPE) component 234. The second SOC 204 mayinclude a 5G modem processor 252, a power management unit 254, aninterconnection/bus module 264, memory 258, and various additionalprocessors 260, such as an applications processor, packet processor,etc. The second SOC 204 may be coupled to a plurality of mmWavetransceivers 256, such as via the interconnection/bus 264 and/ordirectly to the 5G modem processor 252.

Each processor 210, 212, 214, 216, 218, 252, 260 may include one or morecores, and each processor/core may perform operations independent of theother processors/cores. For example, the first SOC 202 may include aprocessor that executes a first type of operating system (such asFreeBSD, LINUX, OS X, etc.) and a processor that executes a second typeof operating system (such as MICROSOFT WINDOWS 10). In addition, any orall of the processors 210, 212, 214, 216, 218, 252, 260 may be includedas part of a processor cluster architecture (such as a synchronousprocessor cluster architecture, an asynchronous or heterogeneousprocessor cluster architecture, etc.).

The first and second SOC 202, 204 may include various system components,resources and custom circuitry for managing sensor data,analog-to-digital conversions, wireless data transmissions, and forperforming other specialized operations, such as decoding data packetsand processing encoded audio and video signals for rendering in a webbrowser. For example, the system components and resources 224 of thefirst SOC 202 may include power amplifiers, voltage regulators,oscillators, phase-locked loops, peripheral bridges, data controllers,memory controllers, system controllers, access ports, timers, and othersimilar components used to support the processors and software clientsrunning on a wireless device. The system components and resources 224 orcustom circuitry 222 also may include circuitry to interface withperipheral devices, such as cameras, electronic displays, wirelesscommunication devices, external memory chips, etc.

The first and second SOC 202, 204 may communicate viainterconnection/bus module 250. The various processors 210, 212, 214,216, 218, may be interconnected to one or more memory elements 220,system components and resources 224, and custom circuitry 222, and athermal management unit 232 via an interconnection/bus module 226.Similarly, the processor 252 may be interconnected to the powermanagement unit 254, the mmWave transceivers 256, memory 258, andvarious additional processors 260 via the interconnection/bus module264. The interconnection/bus module 226, 250, 264 may include an arrayof reconfigurable logic gates or implement a bus architecture (such asCoreConnect, AMBA, etc.). Communications may be provided by advancedinterconnects, such as high-performance networks-on chip (NoCs).

The first or second SOCs 202, 204 may further include an input/outputmodule (not illustrated) for communicating with resources external tothe SOC, such as a clock 206 and a voltage regulator 208. Resourcesexternal to the SOC (such as clock 206, voltage regulator 208) may beshared by two or more of the internal SOC processors/cores.

In addition to the example SIP 200 discussed above, some implementationsmay be implemented in a wide variety of computing systems, which mayinclude a single processor, multiple processors, multicore processors,or any combination thereof.

FIG. 3 is a component block diagram illustrating a software architecture300 including a radio protocol stack for the user and control planes inwireless communications suitable for implementing any of the variousembodiments. With reference to FIGS. 1-3, the wireless device 320 mayimplement the software architecture 300 to facilitate communicationbetween a wireless device 320 (e.g., the wireless device 120 a-120 e,200) and the base station 350 (e.g., the base station 110 a-110 d) of acommunication system (e.g., 100). In various embodiments, layers insoftware architecture 300 may form logical connections withcorresponding layers in software of the base station 350. The softwarearchitecture 300 may be distributed among one or more processors (e.g.,the processors 212, 214, 216, 218, 252, 260). While illustrated withrespect to one radio protocol stack, in a multi-SIM (subscriber identitymodule) wireless device, the software architecture 300 may includemultiple protocol stacks, each of which may be associated with adifferent SIM (e.g., two protocol stacks associated with two SIMs,respectively, in a dual-SIM wireless communication device). Whiledescribed below with reference to LTE communication layers, the softwarearchitecture 300 may support any of variety of standards and protocolsfor wireless communications, and/or may include additional protocolstacks that support any of variety of standards and protocols wirelesscommunications.

The software architecture 300 may include a Non-Access Stratum (NAS) 302and an Access Stratum (AS) 304. The NAS 302 may include functions andprotocols to support packet filtering, security management, mobilitycontrol, session management, and traffic and signaling between a SIM(s)of the wireless device (such as SIM(s) 204) and its core network 140.The AS 304 may include functions and protocols that supportcommunication between a SIM(s) (such as SIM(s) 204) and entities ofsupported access networks (such as a base station). In particular, theAS 304 may include at least three layers (Layer 1, Layer 2, and Layer3), each of which may contain various sub-layers.

In the user and control planes, Layer 1 (L1) of the AS 304 may be aphysical layer (PHY) 306, which may oversee functions that enabletransmission or reception over the air interface via a wirelesstransceiver (e.g., 266). Examples of such physical layer 306 functionsmay include cyclic redundancy check (CRC) attachment, coding blocks,scrambling and descrambling, modulation and demodulation, signalmeasurements, MIMO, etc. The physical layer may include various logicalchannels, including the Physical Downlink Control Channel (PDCCH) andthe Physical Downlink Shared Channel (PDSCH).

In the user and control planes, Layer 2 (L2) of the AS 304 may beresponsible for the link between the wireless device 320 and the basestation 350 over the physical layer 306. In some implementations, Layer2 may include a media access control (MAC) sublayer 308, a radio linkcontrol (RLC) sublayer 310, and a packet data convergence protocol(PDCP) 312 sublayer, each of which form logical connections terminatingat the base station 350.

In the control plane, Layer 3 (L3) of the AS 304 may include a radioresource control (RRC) sublayer 3. While not shown, the softwarearchitecture 300 may include additional Layer 3 sublayers, as well asvarious upper layers above Layer 3. In some implementations, the RRCsublayer 313 may provide functions including broadcasting systeminformation, paging, and establishing and releasing an RRC signalingconnection between the wireless device 320 and the base station 350.

In some implementations, the PDCP sublayer 312 may provide uplinkfunctions including multiplexing between different radio bearers andlogical channels, sequence number addition, handover data handling,integrity protection, ciphering, and header compression. In thedownlink, the PDCP sublayer 312 may provide functions that includein-sequence delivery of data packets, duplicate data packet detection,integrity validation, deciphering, and header decompression.

In the uplink, the RLC sublayer 310 may provide segmentation andconcatenation of upper layer data packets, retransmission of lost datapackets, and Automatic Repeat Request (ARQ). In the downlink, while theRLC sublayer 310 functions may include reordering of data packets tocompensate for out-of-order reception, reassembly of upper layer datapackets, and ARQ.

In the uplink, MAC sublayer 308 may provide functions includingmultiplexing between logical and transport channels, random accessprocedure, logical channel priority, and hybrid-ARQ (HARQ) operations.In the downlink, the MAC layer functions may include channel mappingwithin a cell, de-multiplexing, discontinuous reception (DRX), and HARQoperations.

While the software architecture 300 may provide functions to transmitdata through physical media, the software architecture 300 may furtherinclude at least one host layer 314 to provide data transfer services tovarious applications in the wireless device 320. In someimplementations, application-specific functions provided by the at leastone host layer 314 may provide an interface between the softwarearchitecture and the general purpose processor 206.

In other implementations, the software architecture 300 may include oneor more higher logical layer (such as transport, session, presentation,application, etc.) that provide host layer functions. For example, insome implementations, the software architecture 300 may include anetwork layer (such as Internet protocol (IP) layer) in which a logicalconnection terminates at a packet data network (PDN) gateway (PGW). Insome implementations, the software architecture 300 may include anapplication layer in which a logical connection terminates at anotherdevice (such as end user device, server, etc.). In some implementations,the software architecture 300 may further include in the AS 304 ahardware interface 316 between the physical layer 306 and thecommunication hardware (such as one or more radio frequency (RF)transceivers).

FIG. 4A is a component block diagram illustrating a mmWave receiver 400,and FIG. 4B is a component block diagram illustrating a mmWavetransmitter 450, suitable for use with various embodiments. The mmWavereceiver 400 and the mmWave transmitter 450 may also be referred to asbeamforming architectures. With reference to FIGS. 1-4B, the mmWavereceiver 400 and the mmWave transmitter 450 may be used in a wirelessdevice (e.g., 120 a-120 e, 200, 320) or a base station (e.g., 110 a-110d, 200, 350).

In various embodiments, a wireless device may be configured with boththe mmWave receiver 400 and the mmWave transmitter 450 (i.e., with botharchitectures), and may use either or both. Implementing a wirelessdevice with multiple architectures addresses limitations of a singlestatic architecture. One architecture may be efficient (e.g., use anappropriate spectral efficiency, resolution, and/or power consumptionand/or the like) for a first set of communications and anotherarchitecture may be efficient for a second set of communications. Incontrast, static selection of a single architecture may causeinefficient utilization of computing, communication, network, and/orpower resources by using the single architecture to transmit and/orreceive communications.

Referring to FIG. 4A, the mmWave receiver 400 includes an antenna array402 of a plurality of antenna elements included within one or moreantenna panels. In FIG. 4A, the value “N” represents the number ofantenna elements in the antenna array 402. The antenna array 402 mayinclude a plurality of cross-polarized antennas (each symbolized by an“X”). In some embodiments, the wireless device may be configured withfour dual-pole antennas (i.e., eight in total). Based on a selectedbeamforming codebook, which may be translated into a set of phase shiftsin an analog beamforming block, the wireless device may form beams A₁ upto A_(N).

A conventional mmWave receiver 400 may be configured to perform analogor hybrid beamforming. A signal {tilde over (y)}_(N) (t) received at anantenna N of the antenna array 402 at a time t may propagate to a hybridbeamforming circuit 406. Hybrid beamforming may be performed in RF or atan intermediate frequency (IF) through the hybrid beamforming circuit406. The hybrid beamforming circuit 406 may include a bank of phaseshifters 408 and a summer 410 connected to some of the antenna elements.While analog and hybrid beamforming techniques are generally powerefficient, they are only capable of receiving in a few directions. If ammWave signal is received outside of an analog beam supported by themmWave receiver 400, degradation in signal quality or even beam failuremay be experienced.

A mmWave receiver 400 suitable for use with various embodiments may beconfigured to perform digital beamforming in addition to analog orhybrid beamforming. The mmWave receiver 400 may perform beamforming inbaseband frequencies. Each antenna element (e.g., 1-N) of the antennaarray 402 may be associated with an analog-to-digital converter (ADC)404 (e.g., ADC₁-ADC_(N)), enabling the mmWave receiver 400 tosimultaneously direct virtual receive beams (i.e., enhanced receptiondirections) in any direction within the angular range of the antenna. Toenable power-efficient fully digital receive beamforming in mmWavefrequencies, ADCs 404 with limited- or few-bit resolution (e.g., lessthan 5 bits) may be employed to reduce the power consumption of the ADCs404. Such ADCs 404 may also be relatively cost-efficient. In the mmWavereceiver 400, the number of antenna elements (e.g., 1-N) of the antennaarray 402 may correspond to the number of RF chains 412 (e.g.,1-N_(RF)). In some embodiments, the wireless device may be configuredwith high-resolution ADCs (one per RF chain). In some embodiments, thewireless device may be configured with low-resolution ADCs (one perantenna element, up to eight low-resolution ADCs).

Referring to FIG. 4B, the mmWave transmitter 450 may include the antennaarray 402 of a plurality of antenna elements included within one or moreantenna panels. The wireless device may transmit {tilde over (y)}_(N)(t) signals via antenna elements of the antenna array 402, as receivedvia digital-to-analog converters DACs 456 (e.g., DAC₁ to DAC_(N)). TheDACs 456 may receive signals from a digital precoder 452 and convert thesignals to the analog domain. The digital precoder 452 may perform phaseshifting, mixing, and/or other operations on the received signals.

The mmWave transmitter 450 may include a hybrid beamforming circuit 458that may receive n signals from N RF chains 412. The hybrid beamformingcircuit 458 may include a band of summers 454 and a bank of phaseshifters 408. A hybrid beamforming circuit 458 may propagate a signal{tilde over (y)}_(N) (t) to an antenna N of the antenna array 402.

A wireless device (e.g., a UE) may be configured to operate in adiscontinuous reception (DRX) mode in which the wireless device maypower down its receiver chains for periods of time, for example toconserve power. In a DRX mode the wireless device may periodically poweron, or otherwise activate, its receiver chains at scheduled times tomonitor for transmissions from a base station (e.g., a gNB, etc.). A“DRX cycle” encompasses an on-duration period, during which the wirelessdevice has powered on its receiver chains and is monitoring fortransmissions from the base station, and an off-duration period, duringwhich the wireless device has powered off its receiver chains and cannotreceive transmissions from the base station.

In some DRX mode implementations, a wireless device may receive awake-up signal (WUS) from a base station (e.g., a gNB) outside of theDRX cycle. The WUS may be a downlink control information (DCI) message,such as WUS message having a DCI format 2_6, indicating whether or notthere is a physical downlink control channel (PDCCH) message to betransmitted from the base station to the wireless device in the nexton-duration period of the next DRX cycle. A WUS message may be lesscomplex than other forms of DCI message by including one bit ofinformation the state of which indicates whether or not there is a PDCCHmessage to be transmitted from the base station to the wireless devicein the next on-duration period of the next DRX cycle. The WUS messagemay require less resources to receive and decode than a PDCCH message tobe transmitted from the base station to the wireless device in anon-duration period of a DRX cycle. The base station may schedule WUSmonitoring occasions for a DRX cycle during which the wireless device isto receive a WUS message prior to the start of the DRX cycle. Inresponse to the WUS message received in a WUS monitoring occasionindicating there is not a PDCCH message to be transmitted from the basestation to the wireless device in the next on-duration period of thenext DRX cycle, the wireless device may not power on, or otherwiseactivate, its receiver chains in the next on-duration period of the nextDRX cycle. In response to the WUS message indicating there is a PDCCHmessage to be transmitted from the base station to the wireless devicein the next on-duration period of the next DRX cycle, the wirelessdevice may power on, or otherwise activate, its receiver chains in thenext on-duration period of the next DRX cycle to receive the PDCCHmessage.

In current networks, DRX modes of operation use analog beamformingoperations in mmWave frequencies. Specifically, for frequency range (FR)2 WUS reception, in current networks, multiple monitoring occasions forWUS reception are scheduled with up to three control resource set(CORESETs) for WUS reception with different quasi-colocated (QCL) beamsin each CORSET, and there is at least one WUS monitoring occasionscheduled for each QCL beam. In current networks for FR2 WUS reception,multiple PDCCH search space sets can be configured for WUS messagereception, and the associated CORESETs can have different transmissionconfiguration indicator (TCI) states thereby delivering WUS messages viabeam sweeping in FR2. To account for the WUS beam sweeping in FR2 bycurrent networks, a wireless device using analog beamforming operationsin mmWave frequencies must power on, or otherwise activate, its receiverchains to check multiple occasions for WUS messages with each occasionassociated with different TCI states and requiring differentconfigurations of the receiver chains. As a result, in current DRXimplementations in which wireless device using analog beamformingoperations in mmWave frequencies, the requirement to reconfigure andmonitor for multiple different WUS instances can be a power andprocessing resource intensive requirement.

Various embodiments may enable a wireless device to indicate to a basestation that the wireless device is capable of WUS reception at mmWavefrequencies using digital beamforming. Various embodiments may include abase station (e.g., a gNB) configuring one or more WUS monitoringoccasions for a single discontinuous reception (DRX) cycle such thateach of the one or more WUS monitoring occasions has a single beamconfiguration for a wireless device that is capable of WUS reception atmmWave frequencies using digital beamforming. A single beamconfiguration may be a beam configuration having a single TCI state. Asingle beam configuration having a single TCI state may differ fromother types beam configurations in which the beam configuration may havemultiple TCI states. The wireless device indicating that the wirelessdevice is capable of WUS reception at mmWave frequencies using digitalbeamforming may increase the robustness of WUS reception in comparisonto that of current networks relying on analog beamforming. The wirelessdevice indicating that the wireless device is capable of WUS receptionat mmWave frequencies using digital beamforming may enable a basestation (e.g., a gNB) to use a single beam or perform repetition of thatsame beam without beam sweeping for WUS transmission in mmWavefrequencies. Thus, various embodiments may enable a single WUSmonitoring occasion for WUS reception in mmWave frequencies to besufficient. This may conserve power in the wireless device as there maybe no WUS beam sweeping by the base station, eliminating the need forthe wireless device to check multiple monitoring occasions associatedwith different beams as is required in current networks. Additionally,the TCI state for WUS may be decoupled from the TCI state in theon-duration/active time of the DRX cycle because a wireless device thatis capable of WUS reception at mmWave frequencies using digitalbeamforming may receive different beams with different TCI states.

In various embodiments, the wireless device may send an indication tothe base station that the wireless device is capable of using digitalbeamforming for WUS reception. For example, the indication may be anindication that the wireless device is capable of using digitalbeamforming for WUS reception in mmWave frequencies, such as FR2frequencies, FR4 frequencies, etc. In various embodiments, theindication that the wireless device is capable of using digitalbeamforming for WUS reception may be sent to the base station as part ofoperations of a wireless device to enter a DRX mode of operation. Invarious embodiments, the indication that the wireless device is capableof using digital beamforming for WUS reception may be sent in a messagefrom the wireless device to the base station, such as an uplink controlinformation (UCI) message, a medium access control (MAC) control element(CE)(MAC-CE) message, a radio resource control (RRC) message, etc.

In various embodiments, a base station (e.g., a gNB) may receive anindication from a wireless device that the wireless device is capable ofusing digital beamforming for WUS reception. For example, the indicationmay be an indication that the wireless device is capable of usingdigital beamforming for WUS reception in mmWave frequencies, such as FR2frequencies, FR4 frequencies, etc. In some embodiments, the indicationthat the wireless device is capable of using digital beamforming for WUSreception may be received in a message from the wireless device, such asa UCI message, a MAC-CE message, a RRC message, etc. In someembodiments, in response to receiving the indication from the wirelessdevice that the wireless device is capable of using digital beamformingfor WUS reception, the base station may transmit a WUS configurationmessage for a single DRX cycle of the wireless device. The WUSconfiguration message may indicate one or more WUS monitoring occasionsfor the single DRX cycle and a single beam configuration for each of theone or more WUS monitoring occasions. A single beam configuration may bea beam configuration having a single TCI state. A single beamconfiguration having a single TCI state may differ from other types ofbeam configurations in which the beam configuration may have multipleTCI states. In some embodiments, the one or more WUS monitoringoccasions may be a single WUS monitoring occasion. In embodiments inwhich the one or more WUS monitoring occasions may be a single WUSmonitoring occasion, a WUS message may be transmitted by the basestation only once per DRX cycle. In some embodiments, the one or moreWUS monitoring occasions may be multiple WUS monitoring occasions ineach of which a WUS message is transmitted by the base station with thesame beam configuration during each DRX cycle. In some embodiments, theone or more WUS monitoring occasions may be multiple WUS monitoringoccasions each associated with the same CORESET. In some embodiments,the base station may transmit a PDCCH message during the DRX cycle on abeam having a different beam configuration, such as a different TCI,different CORESET, etc., than the beam used for transmitting the WUSmessage. In some embodiments, the base station may transmit a PDCCHmessage during the DRX cycle on a beam having a same beam configuration,such as a same TCI, same CORESET, etc., as the beam used fortransmitting the WUS message.

In various embodiments, in response to receiving the WUS configurationmessage from the base station, the wireless device may use digitalbeamforming to receive a WUS message from the base station during one ofthe one or more WUS monitoring occasions. In some embodiments, thewireless device may use digital beamforming to receive a PDCCH messageduring the single DRX cycle on a beam having a different beamconfiguration than the single beam configuration for each of the one ormore WUS monitoring occasions. In some embodiments, the different beamconfiguration may include at least a first TCI state for the beam usedfor WUS message transmission and a second different TCI state for thebeam used for receiving the PDCCH message. In some embodiments, the WUSmessage and the PDCCH message may be different format DCI messages. Insome embodiments, the wireless device may use digital beamforming toreceive a PDCCH message during the single DRX cycle on a beam having asame beam configuration as the single beam configuration for each of theone or more WUS monitoring occasions.

FIG. 5A is a process flow diagram illustrating a method 500 that may beperformed by a processor of a wireless device for managingcommunications with a base station in accordance with variousembodiments. With reference to FIGS. 1-5A, the operations of the method500 may be performed by a processor (such as the processor 210, 212,214, 216, 218, 252, 260) of a wireless device (such as the wirelessdevice 120 a-120 e, 200, 320).

In determination block 502, the processor may determine whether mmWavedigital beamforming is enabled for the wireless device. In variousembodiments, a wireless device may be capable of using digitalbeamforming and/or analog beamforming and may selectively transitionbetween using digital beamforming and/or analog beamforming. Forexample, determining whether mmWave digital beamforming is enabled forthe wireless device may include determining whether the wireless devicecurrent settings indicate the wireless device is using mmWave digitalbeamforming or analog beamforming at a given time.

In response to determining that mmWave digital beamforming is notenabled for the wireless device (i.e., determination block 502=“No”),the processor may await mmWave digital beamforming enablement andcontinue to determine whether mmWave digital beamforming is enabled forthe wireless device in determination block 502.

In response to determining that mmWave digital beamforming is enabledfor the wireless device (i.e., determination block 502=“Yes”), theprocessor may perform operations including sending an indication to thebase station that the wireless device is capable of using digitalbeamforming for WUS reception in block 504. In various embodiments,sending the indication to the base station that the wireless device iscapable of using digital beamforming for WUS reception may includesending the indication in a control message sent from the wirelessdevice to the base station, such as a UCI message, a MAC-CE message, aRRC message, etc. In some embodiments, sending the indication to thebase station that the wireless device is capable of using digitalbeamforming for WUS reception may include sending an indication that thewireless device is capable of mmWave digital beamforming for WUSreception in any mmWave frequency range, such as FR2, FR4, etc.

In block 506, the processor may perform operations including receiving aWUS configuration message from the base station, the WUS configurationmessage indicating a WUS monitoring occasion for a DRX cycle and asingle beam configuration for the WUS monitoring occasion. A single beamconfiguration may be a beam configuration having a single TCI state. Asingle beam configuration having a single TCI state may differ fromother types of beam configurations in which the beam configuration mayhave multiple TCI states. In some embodiments, WUS configuration messagefrom the base station may indicate more than one WUS monitoringoccasions for the single DRX cycle and a single beam configuration foreach of the more than one WUS monitoring occasions. In some embodiments,the one or more WUS monitoring occasions may be associated with a sameCORESET. In some embodiments, the one or more WUS monitoring occasionsmay be a single WUS monitoring occasion. In some embodiments, the one ormore WUS monitoring occasions may be multiple WUS monitoring occasions.

In block 508, the processor may perform operations including usingdigital beamforming to receive a WUS message from the base stationduring the WUS monitoring occasion in response to receiving the WUSconfiguration message from the base station. For example, the processormay perform digital beamforming to receive a WUS message in a mmWavefrequency range, such as FR2, FR4, etc. In some embodiments, such as inscenarios in which more than one WUS monitoring occasions for the singleDRX cycle is indicated in the WUS configuration message, the processormay perform operations including using digital beamforming to receive aWUS message from the base station during at least one of the one or moreWUS monitoring occasions in response to receiving the WUS configurationmessage from the base station.

In determination block 510, the processor may determine whether wake-upis required by determining whether a received WUS message indicates aPDCCH message is to be transmitted from the base station to the wirelessdevice in the next on-duration period of the next DRX cycle. A WUSmessage indicating a PDCCH message is to be transmitted may indicatewake-up is required. A WUS message indicating no PDCCH message is to betransmitted may indicate wake-up is not required.

In response to determining that wake-up is not required (i.e.,determination block 510=“No”), the processor may await the next WUSmonitoring occasion and perform operations including using digitalbeamforming to receive a WUS message from the base station during atleast one of the one or more WUS monitoring occasions in determinationblock 508.

In response to determining that wake-up is required (i.e., determinationblock 510=“Yes”), the processor may perform operations includingreceiving a PDCCH message during the single DRX cycle in block 512. Insome embodiments, receiving the PDCCH message during the single DRXcycle may include using analog beamforming to receive the PDCCH messageduring the single DRX cycle. In some embodiments, receiving a PDCCHmessage during the single DRX cycle may include receiving a PDCCHmessage during the single DRX cycle on a beam having the same beamconfiguration as the single beam configuration for the WUS monitoringoccasion. In some embodiments, receiving a PDCCH message during thesingle DRX cycle may include receiving a PDCCH message during the singleDRX cycle on a beam having a different beam configuration than thesingle beam configuration for the WUS monitoring occasion. In someembodiments, receiving the PDCCH message during the single DRX cycle mayinclude using digital beamforming to receive the PDCCH message duringthe single DRX cycle on a beam having a different beam configurationthan the single beam configuration for each of the one or more WUSmonitoring occasions. In some embodiments, the different beamconfiguration may include a different TCI state. In some embodiments,the WUS message and the PDCCH message may be different format downlinkcontrol information (DCI) messages.

FIG. 5B is a process flow diagram illustrating a method 520 that may beperformed by a processor of a base station for managing communicationswith a wireless device in accordance with various embodiments. Withreference to FIGS. 1-5B, the method 520 may be implemented by aprocessor of a network computing device (e.g., the base station 110 a-d,350). In various embodiments, the operations of method 520 may beperformed in conjunction with the operations of method 500 (FIG. 5A).

In block 522, the processor may perform operations including receivingan indication from a wireless device that the wireless device is capableof using digital beamforming for WUS reception. For example, theindication may be an indication that the wireless device is capable ofusing digital beamforming for WUS reception in mmWave frequencies, suchas FR2 frequencies, FR4 frequencies, etc. In various embodiments, theindication that the wireless device is capable of using digitalbeamforming for WUS reception may be received in a message from thewireless device, such as a UCI message, a MAC-CE message, a RRC message,etc.

In block 524, the processor may perform operations includingtransmitting a WUS configuration message for a single DRX cycle of thewireless device in response to receiving the indication from thewireless device that the wireless device is capable of using digitalbeamforming for WUS reception, the WUS configuration message indicatinga WUS monitoring occasion for the single DRX cycle and a single beamconfiguration for the WUS monitoring occasion. A single beamconfiguration may be a beam configuration having a single TCI state. Asingle beam configuration having a single TCI state may differ fromother types of beam configurations in which the beam configuration mayhave multiple TCI states. In some embodiments, more than one WUSmonitoring occasion for the single DRX cycle and a single beamconfiguration for each of the more than one WUS monitoring occasions maybe indicated in the WUS configuration message. In some embodiments, theWUS configuration message may indicate one or more WUS monitoringoccasions for the single DRX cycle and a single beam configuration foreach of the one or more WUS monitoring occasions. In some embodiments,the one or more WUS monitoring occasions may be a single WUS monitoringoccasion. In embodiments in which the one or more WUS monitoringoccasions are a single WUS monitoring occasion, a WUS message may betransmitted by the base station only once per DRX cycle. In someembodiments, the one or more WUS monitoring occasions may be multipleWUS monitoring occasions in each of which a WUS message is transmittedby the base station with the same beam configuration during each DRXcycle. In some embodiments, the one or more WUS monitoring occasions maybe multiple WUS monitoring occasions each associated with the sameCORESET.

In block 526, the processor may perform operations includingtransmitting a WUS message to the wireless device using a beam havingthe single beam configuration during the WUS monitoring occasion. Insome embodiments, such as in scenarios in which more than one WUSmonitoring occasion for the single DRX cycle is indicated in the WUSconfiguration message, the processor may perform operations includingtransmitting a WUS message to the wireless device using a beam havingthe single beam configuration during the more than one WUS monitoringoccasion. In embodiments in which the one or more WUS monitoringoccasions may be a single WUS monitoring occasion, a WUS message may betransmitted by the base station only once per DRX cycle. In embodimentsin which the one or more WUS monitoring occasions may be multiple WUSmonitoring occasions, a WUS message may be transmitted by the basestation with the same beam configuration during each WUS monitoringoccasion.

In block 528, the processor may perform operations includingtransmitting a PDCCH message during the single DRX cycle in response totransmitting the WUS message. In some embodiments, the processor mayperform operations including transmitting a PDCCH message during thesingle DRX cycle on a beam having the same beam configuration as thesingle beam configuration. In some embodiments, the processor mayperform operations including transmitting a PDCCH message during thesingle DRX cycle on a beam having a different beam configuration thanthe single beam configuration. In various embodiments, the PDCCH messagemay be transmitted after transmitting a WUS message indicating wake-upwas required. In some embodiments, the different beam configuration maybe different TCI states for the WUS message beam and the PDCCH beam. Insome embodiments, the WUS message and the PDCCH message may be differentformat DCI messages.

FIG. 5C is time diagram illustrating a WUS monitoring occasion 531 for aDRX cycle according to various embodiments. With reference to FIGS.1-5C, the WUS monitoring occasion 531 of FIG. 5C may be a single WUSmonitoring occasion per DRX cycle 532 for mmWave frequencies, such asFR2 frequencies, FR4, frequencies, etc., managed according to theoperations of methods 500 and/or 520. The WUS monitoring occasion 531may precede the DRX cycle 532 and only a single WUS monitoring occasion531 may be required to signal to the wireless device that wake-up duringthe on-duration 530 of the DRX cycle 532 is required. In someembodiments, the beam used by the base station to send the WUS messageduring the single WUS monitoring occasion 531 may have a different TCIthan the beam used by the base station to send a PDCCH message duringthe on duration 532 of the DRX cycle 532.

FIG. 5D is time diagram illustrating multiple WUS monitoring occasions531 a, 531 b, 531 c for a DRX cycle according to various embodiments.With reference to FIGS. 1-5D, the WUS monitoring occasions 531 a, 531 b,531 c of FIG. 5D may be a multiple WUS monitoring occasions 531 a, 531b, 531 c per DRX cycle 532 for mmWave frequencies, such as FR2frequencies, FR4, frequencies, etc., managed according to the operationsof methods 500 and/or 520. The WUS monitoring occasions 531 a, 531 b,531 c may precede the DRX cycle 532 and any of the WUS monitoringoccasions 531 a, 531 b, 531 c may signal to the wireless device thatwake-up during the on-duration 530 of the DRX cycle 532 is required. Insome embodiments, the same beam may be used to send the WUS messageduring all three of the WUS monitoring occasions 531 a, 531 b, 531 c. Insome embodiments, the beam used by the base station to send the WUSmessage during the WUS monitoring occasions 531 a, 531 b, 531 c may havea different TCI than the beam used by the base station to send a PDCCHmessage during the on duration 532 of the DRX cycle 532.

FIG. 6 is a component block diagram of a network computing devicesuitable for use with various embodiments. Such network computingdevices (e.g., base station 110 a-110 d, 350) may include at least thecomponents illustrated in FIG. 6. With reference to FIGS. 1-6, thenetwork computing device 600 may typically include a processor 601coupled to volatile memory 602 and a large capacity nonvolatile memory,such as a disk drive 608. The network computing device 600 also mayinclude a peripheral memory access device 606 such as a floppy discdrive, compact disc (CD) or digital video disc (DVD) drive coupled tothe processor 601. The network computing device 600 also may includenetwork access ports 604 (or interfaces) coupled to the processor 601for establishing data connections with a network, such as the Internetor a local area network coupled to other system computers and servers.The network computing device 600 may include one or more antennas 607for sending and receiving electromagnetic radiation that may beconnected to a wireless communication link. The network computing device600 may include additional access ports, such as USB, Firewire,Thunderbolt, and the like for coupling to peripherals, external memory,or other devices.

FIG. 7 is a component block diagram of a wireless device 700 suitablefor use with various embodiments. With reference to FIGS. 1-7, variousembodiments may be implemented on a variety of wireless devices 700 (forexample, the wireless device 120 a-120 e, 200, 320), an example of whichis illustrated in FIG. 7 in the form of a smartphone. The wirelessdevice 700 may include a first SOC 202 (for example, a SOC-CPU) coupledto a second SOC 204 (for example, a 5G capable SOC). The first andsecond SOCs 202, 204 may be coupled to internal memory 716, a display712, and to a speaker 714. Additionally, the wireless device 700 mayinclude one or more antenna panels 704 (e.g., four panels) each made upof a number of antenna elements (e.g., 4-8 elements) configured forreceiving RF signals via digital beamforming as describe herein. Theantenna panels 704 may be configured as antenna arrays (e.g., antennaarray 402). The antenna panels 704 may be connected to a wirelesstransceiver 266 coupled to one or more processors in the first or secondSOCs 202, 204. Smartphones 700 typically also include menu selectionbuttons or rocker switches 720 for receiving user inputs.

A wireless device 700 may also include a sound encoding/decoding (CODEC)circuit 710, which digitizes sound received from a microphone into datapackets suitable for wireless transmission and decodes received sounddata packets to generate analog signals that are provided to the speakerto generate sound. One or more of the processors in the first and secondSOCs 202, 204, wireless transceiver 266 and CODEC 710 may includevarious signal processing circuits, alone or in combinations, such asdigital signal processor (DSP) circuits, analog signal processorcircuits, etc. As a specific example, the wireless transceiver 266 mayinclude processing circuits and/or other components of the mmWavereceiver 400 and or the mmWave transmitter 450.

The processors of the network computing device 600 and the wirelessdevice 700 may be any programmable microprocessor, microcomputer ormultiple processor chip or chips that can be configured by softwareinstructions (applications) to perform a variety of functions, includingthe functions of some implementations described below. In some wirelessdevices, multiple processors may be provided, such as one processorwithin an SOC 204 dedicated to wireless communication functions and oneprocessor within an SOC 202 dedicated to running other applications.Software applications may be stored in the memory 716 before they areaccessed and loaded into the processor. The processors may includeinternal memory sufficient to store the application softwareinstructions.

As used in this application, the terms “component,” “module,” “system,”and the like are intended to include a computer-related entity, such as,but not limited to, hardware, firmware, a combination of hardware andsoftware, software, or software in execution, which are configured toperform particular operations or functions. For example, a component maybe, but is not limited to, a process running on a processor, aprocessor, an object, an executable, a thread of execution, a program,or a computer. By way of illustration, both an application running on awireless device and the wireless device may be referred to as acomponent. One or more components may reside within a process or threadof execution and a component may be localized on one processor or coreor distributed between two or more processors or cores. In addition,these components may execute from various non-transitory computerreadable media having various instructions or data structures storedthereon. Components may communicate by way of local or remote processes,function or procedure calls, electronic signals, data packets, memoryread/writes, and other known network, computer, processor, or processrelated communication methodologies.

A number of different cellular and mobile communication services andstandards are available or contemplated in the future, all of which mayimplement and benefit from the various embodiments. Such services andstandards include, e.g., third generation partnership project (3GPP),long termevolution (LTE) systems, third generation wireless mobilecommunication technology (3G), fourth generation wireless mobilecommunication technology (4G), fifth generation wireless mobilecommunication technology (5G) as well as later generation 3GPPtechnology, global system for mobile communications (GSM), universalmobile telecommunications system (UMTS), 3GSM, general packet radioservice (GPRS), code division multiple access (CDMA) systems (e.g.,cdmaOne, CDMA1020™), enhanced data rates for GSM evolution (EDGE),advanced mobile phone system (AMPS), digital AMPS (IS-136/TDMA),evolution-data optimized (EV-DO), digital enhanced cordlesstelecommunications (DECT), Worldwide Interoperability for MicrowaveAccess (WiMAX), wireless local area network (WLAN), Wi-Fi ProtectedAccess I & II (WPA, WPA2), and integrated digital enhanced network(iDEN). Each of these technologies involves, for example, thetransmission and reception of voice, data, signaling, and/or contentmessages. It should be understood that any references to terminologyand/or technical details related to an individual telecommunicationstandard or technology are for illustrative purposes only, and are notintended to limit the scope of the claims to a particular communicationsystem or technology unless specifically recited in the claim language.

Various embodiments illustrated and described are provided merely asexamples to illustrate various features of the claims. However, featuresshown and described with respect to any given embodiment are notnecessarily limited to the associated embodiment and may be used orcombined with other embodiments that are shown and described. Further,the claims are not intended to be limited by any one example embodiment.For example, one or more of the operations of the methods 500-520 may besubstituted for or combined with one or more operations of the methods500-520.

Implementation examples are described in the following paragraphs. Whilesome of the following implementation examples are described in terms ofexample methods, further example implementations may include: theexample methods discussed in the following paragraphs implemented by acomputing device comprising a processor configured withprocessor-executable instructions to perform operations of the examplemethods; the example methods discussed in the following paragraphsimplemented by a computing device including means for performingfunctions of the example methods of the; and the example methodsdiscussed in the following paragraphs implemented as a non-transitoryprocessor-readable storage medium having stored thereonprocessor-executable instructions configured to cause a processor of acomputing device to perform the operations of the example methods.

Example 1. A method performed by a processor of a wireless device formanaging communications with a base station, includes: sending anindication to the base station that the wireless device is capable ofusing digital beamforming for WUS reception; receiving a WUSconfiguration message from the base station, the WUS configurationmessage indicating a WUS monitoring occasion for a single DRX cycle anda single beam configuration for the WUS monitoring occasion; and usingdigital beamforming to receive a WUS message from the base stationduring the WUS monitoring occasion in response to receiving the WUSconfiguration message from the base station.

Example 2. The method of example 1, further includes: receiving a PDCCHmessage during the single DRX cycle in response to receiving the WUSmessage from the base station during the WUS monitoring occasion.

Example 3. The method of example 2, in which receiving the PDCCH messageduring the single DRX cycle comprises receiving the PDCCH message duringthe single DRX cycle on a beam having a different beam configurationthan the single beam configuration for the WUS monitoring occasion.

Example 4. The method of example 3, in which the different beamconfiguration comprises a different TCI state.

Example 5. The method of example 2, in which receiving the PDCCH messageduring the single DRX cycle comprises receiving the PDCCH message duringthe single DRX cycle on a beam having a same beam configuration as thesingle beam configuration for the WUS monitoring occasion.

Example 6. The method of any of examples 2-5, in which receiving thePDCCH message during the single DRX cycle comprises using digitalbeamforming to receive the PDCCH message during the single DRX cycle.

Example 7. The method of any of examples 2-6, in which the WUS messageand the PDCCH message are different format DCI messages.

Example 8. The method of any of examples 1-7, in which sending theindication to the base station that the wireless device is capable ofdigital beamforming for WUS reception comprises sending the indicationin one of a UCI message, a MAC-CE message, or an RRC message.

Example 9. The method of any of examples 1-8, in which sending theindication to the base station that the wireless device is capable ofdigital beamforming for WUS reception comprises sending an indication tothe base station that the wireless device is capable of mmWave digitalbeamforming for WUS reception in one of FR 2 or FR4.

Example 10. A method performed by a processor of a base station formanaging communications with wireless devices, includes: receiving anindication from a wireless device that the wireless device is capable ofusing digital beamforming for WUS reception; transmitting a WUSconfiguration message for a single DRX cycle of the wireless device inresponse to receiving the indication from the wireless device that thewireless device is capable of using digital beamforming for WUSreception, the WUS configuration message indicating a WUS monitoringoccasion for the single DRX cycle and a single beam configuration forthe WUS monitoring occasion.

Example 11. The method of example 10, further includes: transmitting aWUS message to the wireless device using a beam having the single beamconfiguration during the WUS monitoring occasion.

Example 12. The method of example 11, further includes: transmitting aPDCCH message during the single DRX cycle in response to transmittingthe WUS message.

Example 13. The method of example 12, in which transmitting the PDCCHmessage during the single DRX cycle comprises transmitting the PDCCHmessage during the single DRX cycle using a beam having a same beamconfiguration as the single beam configuration.

Example 14. The method of example 12, in which transmitting the PDCCHmessage during the single DRX cycle comprises transmitting the PDCCHmessage during the single DRX cycle using a beam having a different beamconfiguration than the single beam configuration.

Example 15. The method of example 14, in which the different beamconfiguration comprises a different TCI state.

Example 16. The method of example 12, in which the WUS message and thePDCCH message are different format DCI messages.

Example 17. The method of any of examples 10-16, in which the indicationfrom the wireless device that the wireless device is capable of digitalbeamforming for WUS reception is received in one of a UCI message, aMAC-CE message, or an RRC message.

Example 18. The method of any of examples 10-17, in which receiving theindication from the wireless device that the wireless device is capableof digital beamforming for WUS reception comprises receiving anindication from the wireless device that the wireless device is capableof mmWave digital beamforming for WUS reception in one of FR 2 or FR4.

Example 19. The method of example 18, in which the beam having thesingle beam configuration comprises one of a mmWave beam in FR2 or ammWave beam in FR4.

The foregoing method descriptions and the process flow diagrams areprovided merely as illustrative examples and are not intended to requireor imply that the operations of various embodiments must be performed inthe order presented. As will be appreciated by one of skill in the artthe order of operations in the foregoing embodiments may be performed inany order. Words such as “thereafter,” “then,” “next,” etc. are notintended to limit the order of the operations; these words are used toguide the reader through the description of the methods. Further, anyreference to claim elements in the singular, for example, using thearticles “a,” “an,” or “the” is not to be construed as limiting theelement to the singular.

Various illustrative logical blocks, modules, components, circuits, andalgorithm operations described in connection with the embodimentsdisclosed herein may be implemented as electronic hardware, computersoftware, or combinations of both. To clearly illustrate thisinterchangeability of hardware and software, various illustrativecomponents, blocks, modules, circuits, and operations have beendescribed above generally in terms of their functionality. Whether suchfunctionality is implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem. Skilled artisans may implement the described functionality invarying ways for each particular application, but such embodimentdecisions should not be interpreted as causing a departure from thescope of the claims.

The hardware used to implement various illustrative logics, logicalblocks, modules, and circuits described in connection with theembodiments disclosed herein may be implemented or performed with ageneral purpose processor, a digital signal processor (DSP), anapplication specific integrated circuit (ASIC), a field programmablegate array (FPGA) or other programmable logic device, discrete gate ortransistor logic, discrete hardware components, or any combinationthereof designed to perform the functions described herein. Ageneral-purpose processor may be a microprocessor, but, in thealternative, the processor may be any conventional processor,controller, microcontroller, or state machine. A processor may also beimplemented as a combination of receiver smart objects, e.g., acombination of a DSP and a microprocessor, a plurality ofmicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other such configuration. Alternatively, some operations ormethods may be performed by circuitry that is specific to a givenfunction.

In one or more embodiments, the functions described may be implementedin hardware, software, firmware, or any combination thereof. Ifimplemented in software, the functions may be stored as one or moreinstructions or code on a non-transitory computer-readable storagemedium or non-transitory processor-readable storage medium. Theoperations of a method or algorithm disclosed herein may be embodied ina processor-executable software module or processor-executableinstructions, which may reside on a non-transitory computer-readable orprocessor-readable storage medium. Non-transitory computer-readable orprocessor-readable storage media may be any storage media that may beaccessed by a computer or a processor. By way of example but notlimitation, such non-transitory computer-readable or processor-readablestorage media may include RAM, ROM, EEPROM, FLASH memory, CD-ROM orother optical disk storage, magnetic disk storage or other magneticstorage smart objects, or any other medium that may be used to storedesired program code in the form of instructions or data structures andthat may be accessed by a computer. Disk and disc, as used herein,includes compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk, and Blu-ray disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofnon-transitory computer-readable and processor-readable media.Additionally, the operations of a method or algorithm may reside as oneor any combination or set of codes and/or instructions on anon-transitory processor-readable storage medium and/orcomputer-readable storage medium, which may be incorporated into acomputer program product.

The preceding description of the disclosed embodiments is provided toenable any person skilled in the art to make or use the claims. Variousmodifications to these embodiments will be readily apparent to thoseskilled in the art, and the generic principles defined herein may beapplied to other embodiments without departing from the scope of theclaims. Thus, the present disclosure is not intended to be limited tothe embodiments shown herein but is to be accorded the widest scopeconsistent with the following claims and the principles and novelfeatures disclosed herein.

What is claimed is:
 1. A method performed by a processor of a wirelessdevice for managing communications with a base station, comprising:sending an indication to the base station that the wireless device iscapable of using digital beamforming for wake-up signal (WUS) reception;receiving a WUS configuration message from the base station, the WUSconfiguration message indicating a WUS monitoring occasion for a singlediscontinuous reception (DRX) cycle and a single beam configuration forthe WUS monitoring occasion; and using digital beamforming to receive aWUS message from the base station during the WUS monitoring occasion inresponse to receiving the WUS configuration message from the basestation.
 2. The method of claim 1, further comprising: receiving aphysical downlink control channel (PDCCH) message during the single DRXcycle in response to receiving the WUS message from the base stationduring the WUS monitoring occasion.
 3. The method of claim 2, whereinreceiving the PDCCH message during the single DRX cycle comprisesreceiving the PDCCH message during the single DRX cycle on a beam havinga different beam configuration than the single beam configuration forthe WUS monitoring occasion.
 4. The method of claim 3, wherein thedifferent beam configuration comprises a different transmissionconfiguration indicator (TCI) state.
 5. The method of claim 2, whereinreceiving the PDCCH message during the single DRX cycle comprisesreceiving the PDCCH message during the single DRX cycle on a beam havinga same beam configuration as the single beam configuration for the WUSmonitoring occasion.
 6. The method of claim 2, wherein receiving thePDCCH message during the single DRX cycle comprises using digitalbeamforming to receive the PDCCH message during the single DRX cycle. 7.The method of claim 2, wherein the WUS message and the PDCCH message aredifferent format downlink control information (DCI) messages.
 8. Themethod of claim 1, wherein sending the indication to the base stationthat the wireless device is capable of digital beamforming for WUSreception comprises sending the indication in one of an uplink controlinformation (UCI) message, a medium access control (MAC) control element(CE)(MAC-CE) message, or a radio resource control (RRC) message.
 9. Themethod of claim 1, wherein sending the indication to the base stationthat the wireless device is capable of digital beamforming for WUSreception comprises sending an indication to the base station that thewireless device is capable of millimeter wave (mmWave) digitalbeamforming for WUS reception in one of Frequency Range (FR) 2 or FR4.10. A method performed by a processor of a base station for managingcommunications with wireless devices, comprising: receiving anindication from a wireless device that the wireless device is capable ofusing digital beamforming for wake-up signal (WUS) reception; andtransmitting a WUS configuration message for a single discontinuousreception (DRX) cycle of the wireless device in response to receivingthe indication from the wireless device that the wireless device iscapable of using digital beamforming for WUS reception, the WUSconfiguration message indicating a WUS monitoring occasion for thesingle DRX cycle and a single beam configuration for the WUS monitoringoccasion.
 11. The method of claim 10, further comprising: transmitting aWUS message to the wireless device using a beam having the single beamconfiguration during the WUS monitoring occasion.
 12. The method ofclaim 11, further comprising: transmitting a physical downlink controlchannel (PDCCH) message during the single DRX cycle in response totransmitting the WUS message.
 13. The method of claim 12, whereintransmitting the PDCCH message during the single DRX cycle comprisestransmitting the PDCCH message during the single DRX cycle using a beamhaving a same beam configuration as the single beam configuration. 14.The method of claim 12, wherein transmitting the PDCCH message duringthe single DRX cycle comprises transmitting the PDCCH message during thesingle DRX cycle using a beam having a different beam configuration thanthe single beam configuration.
 15. The method of claim 14, wherein thedifferent beam configuration comprises a different transmissionconfiguration indicator (TCI) state.
 16. The method of claim 12, whereinthe WUS message and the PDCCH message are different format downlinkcontrol information (DCI) messages.
 17. The method of claim 10, whereinthe indication from the wireless device that the wireless device iscapable of digital beamforming for WUS reception is received in one ofan uplink control information (UCI) message, a medium access control(MAC) control element (CE)(MAC-CE) message, or a radio resource control(RRC) message.
 18. The method of claim 10, wherein receiving theindication from the wireless device that the wireless device is capableof digital beamforming for WUS reception comprises receiving anindication from the wireless device that the wireless device is capableof millimeter wave (mmWave) digital beamforming for WUS reception in oneof Frequency Range (FR) 2 or FR4.
 19. The method of claim 11, whereinthe beam having the single beam configuration comprises one of a mmWavebeam in FR2 or a mmWave beam in FR4.
 20. A wireless device, comprising:a processor configured with processor-executable instructions to: sendan indication to a base station that the wireless device is capable ofusing digital beamforming for wake-up signal (WUS) reception; receive aWUS configuration message from the base station, the WUS configurationmessage indicating a WUS monitoring occasion for a single discontinuousreception (DRX) cycle and a single beam configuration for the WUSmonitoring occasion; and use digital beamforming to receive a WUSmessage from the base station during the WUS monitoring occasion inresponse to receiving the WUS configuration message from the basestation.
 21. The wireless device of claim 20, wherein the processor isfurther configured with processor-executable instructions to: receive aphysical downlink control channel (PDCCH) message during the single DRXcycle in response to receiving the WUS message from the base stationduring the WUS monitoring occasion.
 22. The wireless device of claim 21,wherein the processor is further configured with processor-executableinstructions to receive the PDCCH message during the single DRX cycle byreceiving the PDCCH message during the single DRX cycle on a beam havinga different beam configuration than the single beam configuration forthe WUS monitoring occasion.
 23. The wireless device of claim 21,wherein the processor is further configured with processor-executableinstructions to receive the PDCCH message during the single DRX cycle byreceiving the PDCCH message during the single DRX cycle on a beam havinga same beam configuration as the single beam configuration for the WUSmonitoring occasion.
 24. The wireless device of claim 21, wherein theprocessor is further configured with processor-executable instructionsto receive the PDCCH message during the single DRX cycle by usingdigital beamforming to receive the PDCCH message during the single DRXcycle.
 25. The wireless device of claim 20, wherein the processor isfurther configured with processor-executable instructions to send theindication to the base station that the wireless device is capable ofdigital beamforming for WUS reception by sending the indication in oneof an uplink control information (UCI) message, a medium access control(MAC) control element (CE)(MAC-CE) message, or a radio resource control(RRC) message.
 26. The wireless device of claim 20, wherein theprocessor is further configured with processor-executable instructionsto send the indication to the base station that the wireless device iscapable of digital beamforming for WUS reception by sending anindication to the base station that the wireless device is capable ofmillimeter wave (mmWave) digital beamforming for WUS reception in one ofFrequency Range (FR) 2 or FR4.
 27. A base station, comprising: aprocessor configured with processor-executable instructions to: receivean indication from a wireless device that the wireless device is capableof using digital beamforming for wake-up signal (WUS) reception; andtransmit a WUS configuration message for a single discontinuousreception (DRX) cycle of the wireless device in response to receivingthe indication from the wireless device that the wireless device iscapable of using digital beamforming for WUS reception, the WUSconfiguration message indicating a WUS monitoring occasion for thesingle DRX cycle and a single beam configuration for the WUS monitoringoccasion.
 28. The base station of claim 27, wherein the processor isfurther configured with processor-executable instructions to: transmit aWUS message to the wireless device using a beam having the single beamconfiguration during the WUS monitoring occasion.
 29. The base stationof claim 28, wherein the processor is further configured withprocessor-executable instructions to: transmit a physical downlinkcontrol channel (PDCCH) message during the single DRX cycle in responseto transmitting the WUS message.
 30. The base station of claim 29,wherein the processor is further configured with processor-executableinstructions to transmit the PDCCH message during the single DRX cycleby transmitting the PDCCH message during the single DRX cycle using abeam having a same beam configuration as the single beam configuration.